February 2019

Metaxentric bushes have a large rubber section with the central pin offset towards one radial plane. These bushes can provide a relatively large radial deflection whilst providing excellent motion control characteristics.

The bush has the following features:

Three dissimilar translational stiffnesses for the best vibration isolation and motion

Metaxentric Bushes are similar to conventional UD Bushes but with inner and outer sleeves offset radially. This feature provides a greater rubber thickness and hence increased flexibility in the normal direction of loading, whilst maintaining control in other modes and still allowing torsional movement.

July 2018

UD Bush

Features

Novibra® type VP and Metalastik® type UD consist of two concentric sleeves with rubber securely bonded between them. Designed to accommodate torsional movements and axial and radial loads. The rubber is prestressed to give maximum dynamic strength and durability. The bonded rubber takes up the full movement. Lubrication or other bearing maintenance is not required. The
bush has excellent sound and vibration isolation characteristics, enabling structures fitted with Novibra® type VP and Metalastik® type UD sleeves to be silent and vibration free.

Novibra® type VP and Metalastik® type UD Bushes

For vehicle suspension, pivot arms and all types of mechanical linkage, permits oscillating movement through the defl ection of rubber in shear. Suitable to replace roller bearings where small motions are required (up to 20 degrees).
Reduces shock loads and noise transmission in structures.

June 2018

Originally designed for use with marine engines, the Metalastik Cushyfloat® is a simple to install, compact, low profile mounting. It combines 3 way control of the suspended equipment with relatively large static deflections where the rubber is loaded in shear and compression.

The design incorporates bump and rebound control features which limit excessive movements under shock loading. Top metal cover gives protection against oil contamination and protective finish resists corrosion attack. Propeller thrust on marine applications is accommodated. There re four sizes in the standard range with varying degrees of rubber hardness catering for point loads from 32kg to 3000kg. Natural frequencies as low as 8Hz are possible.

The Metalastik Rotoflex® Coupling consists of a regular polygon of rubber with metal inserts bonded in position. It can have 4,6 or 8 sides. After moulding, the rubber elements in the coupling are compressed by the fitting of a steel retaining band. This important design feature ensures maximum fatigue life. The retaining band is discarded after assembly. Metal interleaves bonded into the rubber elements provide increased torque capacity when required.

Rotoflex couplings have proved successful for motor car propeller and half-shaft applications for auxiliary drives on road vehicles and for many industrial drives.

When couplings operate at very high speeds and support a cardan shaft, a centring device is necessary; these can be all metal or a metalastik bush arrangement – details are available from our design department on request.